Before you decide on a pond builder it will highly benefit you to read through this thread about proper building of a pond. There have been many threads on this forum for fixing poorly built leaky ponds. Don't you be one of those new members with leaky pond problems asking how to fix a leaky pond. Spend time doing good homework to prevent future leaky pond headaches.
Read through and study this very good thread from the archives heading Common Pond Q & A topics about proper pond building.
http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=92487#Post92487 
